Perhaps Visa isn't actively marketing this card now.
The www.usa.visa.com site doesn't seem to list the Visa Infinite card among the choices of credit cards to explore, but the link to Infinite posted here still works.
I couldn't find anything on Infinite on the Fleet site, but I did find a link to Infinite on the National City site:
http://pia.nationalcity.com/pcg/priv...b_visacard.asp
It's apparently available from their Private Client Group.